The scripting languages supported vary depending on whether you buy Linux or Windows hosting.

Windows hosting:
ASP 6.0
ASP .NET (2.0/3.0/3.5)
Active PERL 5
PHP ver 4 or 5
Python 2.5
SSI 6
Apache Tomcat 5.5
Microsoft FrontPage 5

Linux hosting:
Perl 2
Python 3
Ruby 1.8
Tomcat 5
Samba 3
PHP5